/Engine/Source/Editor/UnrealEd/Public/Kismet2/BlueprintEditorUtils.h
Returns true if the interfaces is implemented. It can be implemented directly or inherited.
static bool ImplementsInterface ( const [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) * Blueprint, bool bIncludeInherited, [UClass](API\Runtime\CoreUObject\UObject\UClass) * SomeInterface )